• Youfeng Zhu, Haiyan Yin, Rui Zhang, and Jianrui Wei.
• Department of Intensive Care Unit, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, China. Electronic address: 151276953@qq.com.
• J Crit Care. 2017 Apr 1; 38: 123-128.

IntroductionThe use of high-flow nasal cannula (HFNC) for the treatment of many diseases has gained increasing popularity. In the present meta-analysis, we aimed to assess the efficacy and safety of HFNCs compared with conventional oxygen therapy (COT) in adult postextubation cardiac surgical patients.MethodWe reviewed the Embase, PubMed, Cochrane Central Register of Controlled Trials, Wanfang databases, and the China National Knowledge Infrastructure. Two investigators independently collected the data and assessed the quality of each study. RevMan 5.3 was used for the present meta-analysis.ResultsWe included 495 adult postextubation cardiac surgical patients. There was no significant heterogeneity among the studies. Compared with COT, HFNCs were associated with a significant reduction in the escalation of respiratory support (risk ratio, 0.61; 95% confidence interval [CI], 0.46-0.82; z = 3.32, P < .001). There were no significant differences in the reintubation rate (risk ratio, 0.96; 95% CI, 0.04-24.84; z = 0.02, P = .98) or length of intensive care unit stay (weighted mean difference, 0.13; 95% CI, -0.88 to 7.92; z = 1.57, P = .12) between the 2 groups. No severe complications were reported in either group.ConclusionsThe HFNC could reduce the need for escalation of respiratory support compared with COT, and it could be safely administered in adult postextubation cardiac surgical patients.Copyright © 2016 Elsevier Inc. All rights reserved.

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